Wu Xing, Wang Shaofeng, Chen Hongxing, Jiang Zhiqiang, Chen Hongwei, Gao Mi, Bi Ran, Klerks Paul L, Wang He, Luo Yongju, Xie Lingtian
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China.
Institute of Environmental Protection, Shenyang University of Chemical Technology, Shenyang, 100049, China.
Environ Sci Pollut Res Int. 2017 Mar;24(7):6512-6522. doi: 10.1007/s11356-016-8348-8. Epub 2017 Jan 10.
The Hun River is a major tributary of the Liao River in the northeast area of China and provides drinking water for 23 million local residents. This study was designed to assess the severity of metal contamination in the Hun River and the potential use of indigenous organisms (the fish Zacco platypus and the snail Radix swinhoei) as biomonitors of metal contamination. Water, sediment, and the native fish and snails were collected at four sampling sites that differed in their physicochemical characteristics and their contamination levels. The samples were analyzed for Cd, Cr, Cu, Ni, Pb, and Zn by ICP-MS. The results showed that although the overall potential ecological risks of the metals were low at our sampling sites, Cd posed a noteworthy ecological risk. Strong correlations were obtained between Cd concentrations in the organisms and in the environment. The results indicated that Z. platypus and R. swinhoei can be useful biomonitoring species for assessing Cd contamination. Biomonitoring with the snail may be most effective when focused on the gonad/digestive tissue (because of the high metal accumulation there), but further work is needed to confirm this.
浑河是中国东北地区辽河的一条主要支流，为2300万当地居民提供饮用水。本研究旨在评估浑河金属污染的严重程度，以及本土生物（鱼类宽鳍鱲和螺蛳）作为金属污染生物监测器的潜在用途。在四个理化特征和污染水平不同的采样点采集了水、沉积物以及本地鱼类和螺蛳。通过电感耦合等离子体质谱法（ICP-MS）分析样品中的镉（Cd）、铬（Cr）、铜（Cu）、镍（Ni）、铅（Pb）和锌（Zn）。结果表明，尽管在我们的采样点金属的总体潜在生态风险较低，但镉构成了显著的生态风险。生物体和环境中的镉浓度之间存在强相关性。结果表明，宽鳍鱲和螺蛳可作为评估镉污染的有用生物监测物种。对螺蛳进行生物监测时，聚焦于性腺/消化组织（因为那里金属积累量高）可能最有效，但需要进一步研究加以证实。
